/*
 * Copyright [2013-2021], Alibaba Group Holding Limited
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.alibaba.polardbx.optimizer.partition.datatype;

/**
 * The boolean value of the range predicate.
 */
public enum PredicateBoolean {
    /**
     * The range predicate for this index is always false.
     */
    IS_ALWAYS_FALSE,
    /**
     * The range predicate for this index is always true
     */
    IS_ALWAYS_TRUE,
    /**
     * There is a range condition that can be used on this index.
     */
    IS_NOT_ALWAYS_TRUE_OR_FALSE
}
